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Expired Canadian patentCanada

Airborne pulp dryer kites

CA 1259344 A · Owner: Sather, Stanley H. · Inventors: Sather, Stanley H.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention provides an apparatus for feeding a web through an apparatus having rollers and wherein the web is air-borne. The apparatus comprises an air-borne leader connectable to the web. The leader is elongated and of a flexible sheet-like material with a, plurality of pockets formed thereon and having a plurality of laterally extending stiffeners. The apparatus is characterized by a plurality of transverse pleats formed on the sheet-like material. Each pleat extends about a transverse passageway extending from one longitudinal edge of the leader to the opposite longitudinal edge. Tubes are fixedly held within each passageway adjacent each longitudinal edge of the leader. There is a …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted September 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 19, 1985
GrantedSeptember 12, 1989
Term endedSeptember 12, 2006
Patent numberCA 1259344 A
Classification (IPC)D21F5/00 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedMarch 19, 1985Patent grantedSep 12, 1989Term endedSep 12, 2006

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.